---
tags: Observability, open-telemetry, OpenTelemetry
---

# Open-Telemetry Collector Resource

## ELK MEMO

- [Elastic APM Open Telemetry Native Support](https://www.elastic.co/guide/en/apm/guide/8.8/open-telemetry-direct.html#connect-open-telemetry-collector)
- [Elastic APM Open Telemetry Resource Attributes](https://www.elastic.co/guide/en/apm/guide/8.8/open-telemetry-resource-attributes.html)
- [Elastic Collect Metrics](https://www.elastic.co/guide/en/apm/guide/current/open-telemetry-collect-metrics.html)
- [Elastic Trace Resource Keys](https://www.elastic.co/guide/en/ecs/current/ecs-event.html)

## Open-Telmetry Semantic-Conventions Docs

- [Open-Telemetry Resource (index page)](https://github.com/open-telemetry/semantic-conventions/tree/main/docs/resource)
- [Open-Telemetry Resource Cloud](https://github.com/open-telemetry/semantic-conventions/blob/main/docs/resource/cloud.md)
- [Open-Telemetry Resource k8s](https://github.com/open-telemetry/semantic-conventions/blob/main/docs/resource/k8s.md)
- [Open-Telemetry Trace Semantic Conventions General attributes](https://opentelemetry.io/docs/specs/otel/trace/semantic_conventions/span-general/)
- [Open-Telemetry Configuration](https://opentelemetry.io/docs/collector/configuration)

## Config Memo

:::info
for open-telemetry collector-contrib 0.80.0
:::

receivers:
  # https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317
      http:
        endpoint: 0.0.0.0:4318

exporters:
  # https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/loggingexporter/README.md
  logging:
    verbosity: normal

  # https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/exporter/lokiexporter/README.md
  loki:
    endpoint: http://loki.kube-monitor.svc.cluster.local:3100/loki/api/v1/push
    tls:
      insecure: true

  # https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/otlpexporter/README.md
  otlp/tempo:
    endpoint: http://tempo-distributor.kube-monitor.svc.cluster.local:4317
    tls:
      insecure: true

  prometheus:
    endpoint: 0.0.0.0:8889
    send_timestamps: true
    metric_expiration: 180m
    resource_to_telemetry_conversion:
      enabled: true

  otlp/elastic:
    # Elastic APM server https endpoint without the "https://" prefix
    endpoint: "http://<endpoint>:<port>"
    headers:
      # Elastic APM Server secret token
      Authorization: "Bearer <token>"
    tls:
      insecure: true

processors:
  batch:
  memory_limiter:
    # 80% of maximum memory up to 2G
    limit_mib: 1500
    # 25% of limit up to 2G
    spike_limit_mib: 512
    check_interval: 5s

  # for grafana loki
  resource/loki:
    attributes:
      - action: insert
        key: loki.resource.labels
        value: service.name, service.namespace, service.version, ApplicationName

  # for elastic
  resource/elastic:
    attributes:
      - action: insert
        # this key is not Official Specifications
        key: service.organization
        value: my-organization
      - action: insert
        key: k8s.cluster.name
        value: product-cluster

service:
  pipelines:
    logs:
      receivers: [otlp]
      processors: [resource/loki]
      exporters: [loki]
    logs/elastic:
      receivers: [otlp]
      processors: [resource/elastic]
      exporters: [otlp/elastic]
    traces:
      receivers: [otlp]
      processors: [memory_limiter, batch, resource/elastic]
      exporters: [otlp/tempo, otlp/elastic]
    metrics:
      receivers: [otlp]
      processors: [batch, resource/elastic]
      exporters: [prometheus, otlp/elastic]